Home / 811,692.96-1,120,586.76-489,484.68

Finding the Fourth Proportional to 811,692.96, 1,120,586.76 and 489,484.68

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Solution

The fourth proportional to 811,692.96, 1,120,586.76 and 489,484.68 is: 675,760.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,692.96 : 1,120,586.76 = 489,484.68 : x
  2. Step 2: Convert to fraction form
    811,692.96/1,120,586.76 = 489,484.68/x
  3. Step 3: Cross multiply
    811,692.96x = 1,120,586.76 × 489,484.68
  4. Step 4: Simplify right side
    811,692.96x = 548,510,051,630.84
  5. Step 5: Solve for x
    x = 548,510,051,630.84/811,692.96
  6. Step 6: Final answer
    x = 675,760.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.